A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5925-01-435-9492
NSN 5925-01-508-4145
NSN 5975-00-045-1715
NSN 6130-00-348-1410
NSN 6645-01-357-4815
NSN 6105-01-235-9100
NSN 5835-01-484-4698
NSN 5935-01-634-0668
NSN 5895-01-467-3834
NSN 5920-01-247-5299
NSN 6220-01-195-5967
NSN 5950-01-131-1724